10202121102220 has 24 divisors (see below), whose sum is σ = 21424656708000. Its totient is φ = 4080809889792.

The previous prime is 10202121102211. The next prime is 10202121102247. The reversal of 10202121102220 is 2220112120201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10202121102194 and 10202121102203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189520 + ... + 4521079.

It is an arithmetic number, because the mean of its divisors is an integer number (892694029500).

Almost surely, 2^{10202121102220} is an apocalyptic number.

10202121102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10202121102220 is an abundant number, since it is smaller than the sum of its proper divisors (11222535605780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10202121102220 is a wasteful number, since it uses less digits than its factorization.

10202121102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818897 (or 4818895 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10202121102220 its reverse (2220112120201), we get a palindrome (12422233222421).

The spelling of 10202121102220 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, one hundred two thousand, two hundred twenty".